Transcriptions: free, lightweight Mac transcription app
It supports both audio and video, with adjustable playback rate and automatic or manual time stamping. I don't have a foot pedal, so I haven't been able to test this, but it apparently supports those, too. I know there are other, more elaborate transcription apps out there, but this one is free, easy to use, takes up under 1MB of disk space. It makes my work a lot of less of a pain than it was when I was using Quicktime and TextEdit to do the job of this one neat little app.